Glad to hear you enjoyed!

I haven't tested to say for sure, but I would expect it should be fine at least 3 - 5 days in the fridge when in a sealed jar/container, if not longer. Yes, canning would mean it will last longer. It isn't as high in preservatives (sugar/salt/vinegar) as some other condiments, but it will keep quite a bit longer unopened if canned safely.

How long would this last for in refrigerator? Could I do the canning process to have it last for a longer time?

I haven't tried myself, but I don't see any reason why it shouldn't work.

Oops, seem to have missed at some point - updated now (it's an approximate amount - you just want enough to soften the onion without it burning/getting too brown but also not have an excess of oil)

I didn’t see how much oil to use did I miss it somewhere

Glad you enjoyed, and yes it goes well with pork. I can see the cilantro working well, too.

I haven't tried this with salmon but it sounds like worth a try - it's certainly one tasty chutney!

Thank you - it's an easy and tasty way to use some!

Thank you!